Combine AoC Repos

2016/day03/main.go

@@ -0,0 +1,88 @@
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"log"
+	"os"
+	"sort"
+	"strconv"
+	"strings"
+)
+
+func main() {
+	input := stdinToStringSlice()
+	puzzleOne(input)
+	puzzleTwo(input)
+}
+
+func puzzleOne(input []string) {
+	fmt.Println("=== Puzzle One ===")
+	var numGood int
+	var sides []int
+	for i := range input {
+		pts := strings.Fields(input[i])
+		sides = []int{atoi(pts[0]), atoi(pts[1]), atoi(pts[2])}
+		if isValidTriangle(sides) {
+			numGood++
+		}
+	}
+	fmt.Println("Found Good: ", numGood)
+}
+
+func puzzleTwo(input []string) {
+	fmt.Println("=== Puzzle Two ===")
+	var numGood int
+	var sides1, sides2, sides3 []int
+	for i := range input {
+		pts := strings.Fields(input[i])
+		sides1 = append(sides1, atoi(pts[0]))
+		sides2 = append(sides2, atoi(pts[1]))
+		sides3 = append(sides3, atoi(pts[2]))
+		if len(sides1) == 3 {
+			if isValidTriangle(sides1) {
+				numGood++
+			}
+			if isValidTriangle(sides2) {
+				numGood++
+			}
+			if isValidTriangle(sides3) {
+				numGood++
+			}
+			sides1 = []int{}
+			sides2 = []int{}
+			sides3 = []int{}
+		}
+	}
+	fmt.Println("Found Good: ", numGood)
+}
+
+func isValidTriangle(sides []int) bool {
+	sort.Ints(sides)
+	if sides[2] < (sides[1] + sides[0]) {
+		return true
+	}
+	return false
+}
+
+func itoa(i int) string {
+	return strconv.Itoa(i)
+}
+
+func atoi(i string) int {
+	var ret int
+	var err error
+	if ret, err = strconv.Atoi(i); err != nil {
+		log.Fatal("Invalid Atoi")
+	}
+	return ret
+}
+
+func stdinToStringSlice() []string {
+	var input []string
+	scanner := bufio.NewScanner(os.Stdin)
+	for scanner.Scan() {
+		input = append(input, scanner.Text())
+	}
+	return input
+}